background image

Model No. ME-9858

Physical Pendulum Accessory

11

®

Using equation #8, calculate the resulting KE of the pendulum.

How do these two values compare? Calculate the percent difference between them.  How 

"elastic" was the rubber band collision? What are the sources of error?  Did you lose or 

gain energy?  What would you expect?  Explain why.

 Appendix A: DataStudio Setup Instructions

Procedure

Steps

PART I:

 Plug the 

photogate into the  
interface:

PASPORT:

 

a) 

Plug the Photogate Port into either port on a PASPORT 

Photogate Port.  

b) 

Plug the Photogate Port into a PASPORT interface.  

c)

 Connect the PASPORT interface (i.e. USB Link, PowerLink, etc.) to a 

USB port on your USB-compatible computer. 

d) 

When the PASPORTAL 

window opens, select “Launch DataStudio.”
OR

ScienceWorkshop: a) 

Plug the stereo plug on the Photogate into a 

ScienceWorkshop

 interface.  

b)

 Launch DataStudio. 

PART II:

 Set up your 

experiment

PASPORT:  a)

 In the PASPORT Setup window, click on the 

Add Timer 

button and select Photogate Timing from the available choices.  

b)

 At 

the prompt, enter the flag length and photogate spacing and click 

OK

c)

 

In the PASPORT Setup window, scroll to the Photogate Timing box, and 
select “time in gate” and “velocity in gate.” 
OR

ScienceWorkshop: 

 

a)

 In the Welcome to DataStudio window, double 

click “Create Experiment.” 

b)

 In the Sensors list, click and drag a 

Photogate icon to the picture of the interface (i.e. to the same digital 
channel in which you have the photogate connected.)  

c) 

In the 

Experiment Setup window, double click on the Photogate icon.  

d)

 In the 

Measurement tab, select “time in gate” and “velocity in gate.”  

e)

 In the 

Constant tab, enter the flag length in meters and click 

OK

f)

 In the main 

toolbar, click the 

Timers

 button.  

g)

 Under Label, type a name for your 

timing sequence.  

h)

 Click on the down arrow next to channel 1 and 

select “blocked.”  

i)

 Click on the arrow again and select “unblocked.”       

j)

 Click the 

Done

 button to save your timing scheme.

PART III:

 Create the  

velocity equation

a) 

Click the 

New

 button to create a new equation. In the equation box, 

type in the velocity equation: v=d/t,  where v= velocity in m/s, d=distance 
in meters, and t=time in seconds. Click the 

Accept

 button. 

b)

 Under 

Variables, next to variable “d”, click on the down arrow, select constant, 
and type in the flag distance from leading edge to leading edge (about 
.001 m).  

c)

 For variable “t”, click on the down arrow, select “data 

measurement,” “time in gate” and click OK. (For more instructions on 
building equations, see the DataStudio online help.)]

PART IV: 

Collect Data

a)

 From the Data list, drag the velocity equation over a y-axis in a 

separate Table display.  

b) 

Click the 

Start 

button on the main toolbar.

KE

1
2

---

I

ω

2

=

Содержание Physical Pendulum Accessory

Страница 1: ...Instruction Manual Manual No 012 08581A Physical Pendulum Accessory Model No ME 9858...

Страница 2: ......

Страница 3: ...r 6 Part II Record the Pendulum s Mass Length and Radius 6 Part III Collecting Velocity Data 7 Option 1 Measuring the Car s Velocity with Photogates and a Computer Interface 7 Option 2 Measuring the C...

Страница 4: ...with pivot pin 1 003 08577 2 Pivot Rod with Ball Bearings 1 616 101 3 Mass 1 gram 2 648 06505 4 Mass 2 grams 2 648 06506 5 Mass 5 grams 1 648 06507 6 Mass 10 grams 1 648 06508 Additional Equipment Req...

Страница 5: ...tudies of angular momentum linear and rotational kinetic energy and gravitational potential energy The release point of the Mini Car can be adjusted until the pendulum just makes it to the top of its...

Страница 6: ...shown in Figure 3a Use two rubber bands b Release the car backwards with the rubber band part of the bumper in front Note The bumper pin on the end of the pendulum must hit the middle of the rubber b...

Страница 7: ...o that its velocity after the collision is zero The mass needed to do this is independent of the speed of the car but if the car is moving too slowly friction will stop the car any way Start the car a...

Страница 8: ...ust the photogate up and down so that the flag blocks the photogate beam The nuts on the photogate support peg allow the sideways position of the photogate to also be changed For more information see...

Страница 9: ...dulum can experimentally be found by balancing it on a knife s edge but since the pins have negligible mass you can assume its center of mass is at the center l 2 Thus the distance x Figure 7 the dist...

Страница 10: ...mass increases its height by an amount h it increases its gravitational potential energy PE by an amount mgh For a non point mass like the physical pendulum the distance h is the amount the center of...

Страница 11: ...tle friction we can assume conservation of energy as the pendulum swings up to its stopped position at the top Thus the pendulum s total energy at the bottom only rotational KE is equal to its total e...

Страница 12: ...come to DataStudio window double click Create Experiment b In the Sensors list click and drag a Photogate icon to the picture of the interface i e to the same digital channel in which you have the pho...

Страница 13: ...on Copyright Notice The PASCO scientific 012 08581A Physical Pendulum Accessory Manual is copyrighted and all rights reserved However permission is granted to non profit educational institutions for r...

Отзывы: